CN201083800Y - Transformer substation insulated live-wire detector based on dummy instrument technology - Google Patents

Transformer substation insulated live-wire detector based on dummy instrument technology Download PDF

Info

Publication number
CN201083800Y
CN201083800Y CNU2007201027825U CN200720102782U CN201083800Y CN 201083800 Y CN201083800 Y CN 201083800Y CN U2007201027825 U CNU2007201027825 U CN U2007201027825U CN 200720102782 U CN200720102782 U CN 200720102782U CN 201083800 Y CN201083800 Y CN 201083800Y
Authority
CN
China
Prior art keywords
transformer
signal conditioner
sensor
virtual instrument
technique according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU2007201027825U
Other languages
Chinese (zh)
Inventor
刘海峰
高树国
耿江海
胡涛
杜大全
刘宏亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
Hebei Electric Power Construction Adjustment Test Institute
Original Assignee
Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd filed Critical Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
Priority to CNU2007201027825U priority Critical patent/CN201083800Y/en
Application granted granted Critical
Publication of CN201083800Y publication Critical patent/CN201083800Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Abstract

The utility model relates to an insulation on-line detector based on the virtual instrument technology, which comprises a sensor, a signal conditioner, an A/D converter and a compute, an output end of the sensor is connected with an input end of the signal conditioner, an output end of the signal conditioner is connected with an input end of the computer through the A/D converter; the sensor is a current transformer or/ and a voltage transformer. The utility model has the advantage that the of the virtual instrument structural form is adopted, thereby the intelligent degree and testing performance are improved, the dependence to the hardware system is decreased, a plurality of ways can be adopted to process the interference and harmonic effect, thereby having higher measuring accuracy and stability; and power cutting maintenance cost is saved so as to guarantee reliably operation of the power system.

Description

Transformer station's para tape electro-detection instrument based on virtual instrument technique
Technical field
The utility model relates to a kind of transformer station's para tape electro-detection instrument based on virtual instrument technique, is applicable to the medium consumption angle of capacitive apparatus and the charged detection of metal oxide arrester Leakage Current.Belong to the detecting instrument technical field.
Background technology
Domestic substation equipment para tape electro-detection system generally is discrete instrumentation at present, its working method is calculated with hand-manipulated, artificial reading and to its numerical value, angle from data management, can't handle lot of data, and have single fixing, the shortcomings such as graphical interfaces is little, poor expandability of systemic-function.And, adopt regular detection system usually, the prophylactic repair system, the prophylactic repair system has been inapplicable answers the requirement to power supply reliability of the needs of electric system reform and development and power consumer.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of transformer station's para tape electro-detection instrument based on virtual instrument technique.
The technical scheme that its technical matters that solves the utility model adopts:
The utility model includes sensor, signal conditioner, A/D converter, computing machine; The input end of the output termination signal conditioner of sensor, the output terminal of signal conditioner connects input end and computer through A/D converter; Described sensor is that current transformer is or/and voltage transformer (VT).
The utility model is built detection platform based on virtual instrument technique, the charged measuring ability of integrated plurality of devices insulation.Advantages such as this platform detects application software by the LabVIEW exploitation, makes up the virtual instrument storehouse, realizes the analyzing and processing to various signals, has the software and hardware favorable expandability, and antijamming capability is strong, data processing function is powerful.
The beneficial effects of the utility model are owing to adopt the Virtual Instrument Structure form, thereby the intelligent degree and the test performance of instrument have been improved, reduced dependence, can adopt several different methods to handle and disturb and influence of harmonic, had higher accuracy of measurement and stability hardware system; And cut and economized the power failure maintenance cost, guaranteed the reliability service of electric system.
Description of drawings
Fig. 1 is a principle calcspar of the present utility model.
Fig. 2 detects the wiring diagram of metal oxide arrester leakage current for the utility model.
Wiring diagram when Fig. 3 detects capacitive apparatus for the utility model.
In Fig. 2-3, PT is a voltage transformer (VT), and CT1-CT3 is a straight-through current transformer, and MOA is a metal oxide arrester, and Cn is the standard capacitive apparatus, and Cx is tested capacitive apparatus, and DET is the main part (part except that sensor) of this charged detector.
Embodiment
By the embodiment shown in Fig. 1-3 as can be known, it includes sensor, signal conditioner, A/D converter, computing machine; The input end of the output termination signal conditioner of sensor, the output terminal of signal conditioner connects input end and computer through A/D converter; Described sensor is that current transformer is or/and voltage transformer (VT).
In the present embodiment, also comprise printer, printer is connected with the printout mouth of computing machine; The model of described signal conditioner is SCXI-1142; Described A/D converter adopts PXI-6143 digital collection card; Described computing machine adopts portable computer.
In the present embodiment, when detecting the Leakage Current of metal oxide arrester MOA, described sensor is a voltage transformer pt and a straight-through current transformer CT1; The elementary of voltage transformer pt is connected between bus Bus and the ground, and straight-through current transformer CT1 is contained in (see figure 2) on the ground wire of metal oxide arrester MOA.
When detecting capacitive apparatus, described sensor adopts two straight-through current transformer CT2, CT3, and straight-through current transformer CT2, CT3 are contained in (see figure 3) on the ground wire of standard capacitive apparatus Cn and tested capacitive apparatus Cx respectively.
The course of work of this example is as follows:
One, voltage, the current signal that at first obtains by sensor:
When (1) detecting leakage current of an arrester, Fig. 2 has provided wiring diagram, and voltage signal is obtained through bus Bus by voltage transformer pt, and current signal is obtained by the straight-through current transformer CT1 that is contained on the metal oxide arrester MOA ground wire.
When (2) detecting capacitive equipment dielectric loss, Fig. 3 has provided wiring diagram, and present embodiment is taked the homophase relative method, need not gather voltage signal, with the screen loop, end that two straight-through current transformer CT2, CT3 are contained in two capacitive apparatus Cn, Cx respectively, obtains current signal.
Two, the voltage signal and the current signal of above-mentioned acquisition are nursed one's health in signal conditioner: the model of signal conditioner is SCXI-1142, it is produced by America NI company, because when capacitive apparatus and lightning arrester detection, obtained current signal is all very little, must amplify it; The interference of the various signals that bring for opposing external complex electromagnetic environment, this signal conditioner carries out filtering with low-pass filter to it, and isolated location is set to defend the injury of possible superpotential to acquisition system.
Three, then the signal after the above-mentioned conditioning is carried out the A/D conversion:
The PXI-6143 data collecting card that A/D converter adopts America NI company to give birth to, this capture card can guarantee synchronized sampling.When detecting capacitive apparatus, the two-way current signal of Cn, the Cx of two capacitive apparatus is carried out synchronous acquisition: when detecting metal oxide arrester MOA, a kind of collection voltage signal, a kind of collection current signal, synchronous acquisition.The data that collect are delivered to computing machine by optical cable and are handled.
Four, Data Management Analysis: in portable computer, carry out data processing and analysis with LabVIEW software programming program.Detect when capacitive apparatus insulated, adopt harmonic analysis method that the two-way current signal is carried out frequency-domain analysis, calculate dielectric loss angle poor of two capacitive apparatus, and employing homophase comparative analysis, if the less then equipment of equipment room first-harmonic angular difference is normal, if the excessive then explanation of first-harmonic angular difference wherein has one or two to have fault; When detecting lightning arrester, adopt harmonic analysis method to calculate the total current and the current in resistance property of this equipment,, represent that this lightning arrester is normal as its regulation that meets the product technology condition, otherwise, represent that it has problem.
Five, last, realize data storage and printing.

Claims (7)

1. based on transformer station's para tape electro-detection instrument of virtual instrument technique, it is characterized in that it includes sensor, signal conditioner, A/D converter, computing machine; The input end of the output termination signal conditioner of sensor, the output terminal of signal conditioner connects input end and computer through A/D converter; Described sensor is that current transformer is or/and voltage transformer (VT).
2. the transformer station's para tape electro-detection instrument based on virtual instrument technique according to claim 1 is characterized in that it also comprises printer, and printer is connected with the printout mouth of computing machine.
3. the transformer station's para tape electro-detection instrument based on virtual instrument technique according to claim 2, the model that it is characterized in that described signal conditioner is SCXI-1142.
4. the transformer station's para tape electro-detection instrument based on virtual instrument technique according to claim 3 is characterized in that described A/D converter adopts PXI-6143 digital collection card.
5. the transformer station's para tape electro-detection instrument based on virtual instrument technique according to claim 4, described computing machine adopts portable computer.
6. the transformer station's para tape electro-detection instrument based on virtual instrument technique according to claim 5, it is characterized in that described sensor is a voltage transformer pt and a straight-through current transformer CT1 when detecting the Leakage Current of metal oxide arrester MOA; The elementary of voltage transformer pt is connected between bus Bus and the ground, and straight-through current transformer CT1 is contained on the ground wire of metal oxide arrester MOA.
7. the transformer station's para tape electro-detection instrument based on virtual instrument technique according to claim 5, it is characterized in that when detecting capacitive apparatus, described sensor adopts two straight-through current transformer CT2, CT3, and straight-through current transformer CT2, CT3 are contained in respectively on the ground wire of standard capacitive apparatus Cn and tested capacitive apparatus Cx.
CNU2007201027825U 2007-10-15 2007-10-15 Transformer substation insulated live-wire detector based on dummy instrument technology Expired - Fee Related CN201083800Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201027825U CN201083800Y (en) 2007-10-15 2007-10-15 Transformer substation insulated live-wire detector based on dummy instrument technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201027825U CN201083800Y (en) 2007-10-15 2007-10-15 Transformer substation insulated live-wire detector based on dummy instrument technology

Publications (1)

Publication Number Publication Date
CN201083800Y true CN201083800Y (en) 2008-07-09

Family

ID=39626270

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007201027825U Expired - Fee Related CN201083800Y (en) 2007-10-15 2007-10-15 Transformer substation insulated live-wire detector based on dummy instrument technology

Country Status (1)

Country Link
CN (1) CN201083800Y (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102121953A (en) * 2010-11-26 2011-07-13 河南省电力公司平顶山供电公司 Method for measuring power system harmonic wave based on virtual instrument
CN102608409A (en) * 2012-04-01 2012-07-25 江西省电力科学研究院 Digital compensation method for measuring resistive current of MOA (metal oxide arrester)
CN103576032A (en) * 2013-11-14 2014-02-12 国家电网公司 On-line detection device and method of power device
CN106501689A (en) * 2016-11-03 2017-03-15 国网重庆市电力公司北碚供电分公司 A kind of distributed capacitive apparatus insulated electrification detection system
CN112305351A (en) * 2020-10-20 2021-02-02 云南电网有限责任公司电力科学研究院 MOA resistive current measuring method for leakage current reconstruction voltage
CN112305348A (en) * 2020-10-20 2021-02-02 云南电网有限责任公司电力科学研究院 Method for quickly testing resistive current of reconstructed MOA (metal oxide arrester) by considering in-phase capacitive equipment
CN112305349A (en) * 2020-10-20 2021-02-02 云南电网有限责任公司电力科学研究院 MOA resistive current rapid measurement method
CN112305352A (en) * 2020-10-20 2021-02-02 云南电网有限责任公司电力科学研究院 Voltage reconstruction MOA resistive current testing method based on in-phase capacitive equipment

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102121953A (en) * 2010-11-26 2011-07-13 河南省电力公司平顶山供电公司 Method for measuring power system harmonic wave based on virtual instrument
CN102608409A (en) * 2012-04-01 2012-07-25 江西省电力科学研究院 Digital compensation method for measuring resistive current of MOA (metal oxide arrester)
CN103576032A (en) * 2013-11-14 2014-02-12 国家电网公司 On-line detection device and method of power device
CN106501689A (en) * 2016-11-03 2017-03-15 国网重庆市电力公司北碚供电分公司 A kind of distributed capacitive apparatus insulated electrification detection system
CN112305351A (en) * 2020-10-20 2021-02-02 云南电网有限责任公司电力科学研究院 MOA resistive current measuring method for leakage current reconstruction voltage
CN112305348A (en) * 2020-10-20 2021-02-02 云南电网有限责任公司电力科学研究院 Method for quickly testing resistive current of reconstructed MOA (metal oxide arrester) by considering in-phase capacitive equipment
CN112305349A (en) * 2020-10-20 2021-02-02 云南电网有限责任公司电力科学研究院 MOA resistive current rapid measurement method
CN112305352A (en) * 2020-10-20 2021-02-02 云南电网有限责任公司电力科学研究院 Voltage reconstruction MOA resistive current testing method based on in-phase capacitive equipment

Similar Documents

Publication Publication Date Title
CN201083800Y (en) Transformer substation insulated live-wire detector based on dummy instrument technology
CN101846719B (en) Transformer insulation state on-line monitoring device
CN201218822Y (en) Electric energy quality on-line monitoring device
CN106291085A (en) Short-circuit current of near zone of transformer monitoring method
CN105137158A (en) Power system temporary overvoltage monitoring system
CN207730875U (en) A kind of wind-driven generator winding insulation failure detector
CN203337722U (en) Voltage and current collecting device of grid overhead transmission line
CN101685121B (en) Dynamic process online monitoring device for electric power system and method thereof
CN102680862A (en) Device and method for online monitoring of partial discharge of shunt capacitor
CN102636717A (en) Portable three-phase load acquisition recorder for low-pressure multipath outgoing cable
CN202041572U (en) Off-line detector for current of high-voltage direct current switch oscillation loop
CN102087308A (en) Electric quantity acquisition and test analyzer and method for power system
CN201319049Y (en) High-tension current mutual-inductor transformation ratio tester
CN110927511B (en) Power grid fault diagnosis system and method using fault waveform
CN202548244U (en) Portable three-phase load acquisition recording device for low-voltage multi-path outgoing cable
CN103439606A (en) Portable low-voltage multi-path outgoing cable three-phase load collecting recorder
CN203984098U (en) A kind of device for quick testing of powerline network
CN209728059U (en) A kind of transformer load loss measuring system
CN207650299U (en) The pilot system of switching 10kV shunt reactor switching overvoltage braking measures
CN203848796U (en) On-line monitoring device of power distribution network transformer low-voltage winding deformation
CN203101540U (en) Portable load characteristic analyzer
CN206515392U (en) Ship Electrical Power System Harmonic Detecting Device
CN106405357B (en) A kind of extra-high voltage electric transmission and transformation equipment DC partial discharge test macro and test method
CN106526303B (en) A kind of the C-V characteristic test device and method of solid decoupling device
CN110470963A (en) A kind of high voltage capacitive apparatus insulated performance on-line monitoring device based on DSP

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Hebei Electric Power Construction & Adjustment Research Institute

Assignor: Hebei Electric Power Research Institute

Contract fulfillment period: 2008.9.22 to 2017.10.15

Contract record no.: 2008130000013

Denomination of utility model: Transformer substation insulated live-wire detector based on dummy instrument technology

Granted publication date: 20080709

License type: Exclusive license

Record date: 20081021

EE01 Entry into force of recordation of patent licensing contract

Assignee: Hebei Electric Power Construction & Adjustment Research Institute

Assignor: Hebei Electric Power Research Institute

Contract fulfillment period: 2008.9.22 to 2017.10.15

Contract record no.: 2008130000013

Denomination of utility model: Transformer substation insulated live-wire detector based on dummy instrument technology

Granted publication date: 20080709

License type: Exclusive license

Record date: 20081021

LIC Patent licence contract for exploitation submitted for record

Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.9.22 TO 2017.10.15; CHANGE OF CONTRACT

Name of requester: HEBEI PROVINCE ELECTRICITY CONSTRUCTION ADJUSTMENT

Effective date: 20081021

ASS Succession or assignment of patent right

Owner name: STATE ELECTRIC NET CROP. HEBEI ELECTRIC POWER CONS

Effective date: 20130320

Owner name: HEBEI ELECTRIC POWER CORPORATION ELECTRIC POWER RE

Free format text: FORMER OWNER: HEBEI ELECTRIC POWER RESEARCH INSTITUTE

Effective date: 20130320

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20130320

Address after: 050021 Shijiazhuang Province, Yuhua Province Sports street, South Street, No. 238, No.

Patentee after: Electric Power Research Institute of Hebei Electric Power Corporation

Patentee after: State Grid Corporation of China

Patentee after: Hebei Electric Power Construction & Adjustment Research Institute

Address before: 050021 Hebei city of Shijiazhuang Province Sports South Street No. 238 Hebei Electric Power Research Institute

Patentee before: Hebei Electric Power Research Institute

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080709

Termination date: 20151015

EXPY Termination of patent right or utility model